﻿#region Header

/**************************************
 * DATE:          19.01.2011 20:44
 * AUTHOR:        Raphael B. Estrada
 * AUTHOR URL:    http://www.galaktor.net
 * AUTHOR E-MAIL: galaktor@gmx.de
 *
 * The MIT License
 *
 * Copyright (c) 2011 Raphael B. Estrada
 * Author URL:    http://www.galaktor.net
 * Author E-Mail: galaktor@gmx.de
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 * ***********************************/

#endregion Header

using Typemock.Lint.SDK;

namespace TestLintExtensions
{
    public class TestMethodLengthRule: BaseTestReviewer
    {
        private const int MAX_TEST_LENGTH = 20;

        public override ReviewCategory DefaultRuleCategory
        {
            get { return ReviewCategory.Maintinability; }
        }

        public override object VisitMethodDeclaration(ICSharpCode.NRefactory.Ast.MethodDeclaration methodDeclaration, object data)
        {
            if (ExpressionHelpers.IsTest(methodDeclaration))
            {
                int startLine = methodDeclaration.Body.StartLocation.Y;
                int endLine = methodDeclaration.Body.EndLocation.Y;

                int length = endLine - startLine - 1;

                if (length >= MAX_TEST_LENGTH)
                {
                    ReviewInfo info = ExpressionHelpers.MakeReviewFromExpression(this,
                                                                                 methodDeclaration,
                                                                                 ruleUrl:
                                                                                     @"https://www.google.com/search?q=unit+test+length",
                                                                                 text:
                                                                                     string.Format("Method length is {0} lines or more. This can make it harder to understand and maintain. Consider splitting the test into several tests or refactoring the code-under-test for better testability.", MAX_TEST_LENGTH),
                                                                                 title: "Test method too long.");
                    Reviews.Add(info);
                } 
            }

            return base.VisitMethodDeclaration(methodDeclaration, data);
        }
    }
}